female genitals vs cunt

female genitals and cunt both are nouns.

Word	Noun	Adjective	Verb	Adverb
female genitals	Yes	No	No	No
cunt	Yes	No	No	No

As nouns, cunt is a hyponym of female genitals; that is, cunt is a word with a more specific, narrower meaning than female genitals:

Other hyponyms of female genitals include minge, puss, pussy, slit, snatch, twat, vulva.

female genitals (noun)	cunt (noun)
external female sex organs	obscene terms for female genitals
	a person (usually but not necessarily a woman) who is thoroughly disliked